Saliva-ejector



UNITED T75 GEORGE n. HECK, or PRINCE BAY, NEW Yorin', AssieNor. Tpo THE s. WErrE DENTAL "r ifi E.

sAI'iIvA-Eancron.

To all whom it may concern.'

Be it known that I, GEORGE D. HECK, a citizen of the United States, and a resident of Prince Bay, in the county of Richmond, State of New York, have invented certain new and useful Improvements in Saliva- Ejectors, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates particularly to that cla'ss of devices employed by dentists for ejecting the surplusA saliva from the patients mouth while operating upon the teeth, and

is especially directed to the connection between the mouthpiece and the tube which conveys the saliva therefrom. l

The principal objects of my invention are, to provide a saliva-ejector with a connection which is of simple construction, efficient in its operation, and which is highly sanitary, being readily assembled and taken apart to facilitate the thorough cleansing of all of vide a saliva-ejector with a connection in which the several independently removable parts are rigidly held in place by the attaching of one of said parts with the casing of said connection.

Specifically stated, the form of my invention as hereinafter described comprehends a casing having a passageway obstructed by a foraminous diaphragm serving as a strainer, and a removable stuiiing-box arranged to retain said strainer andv having a gland adjustably connected with said casing to hold the removable parts together.

My invention also includes all of the various novel features of construction and arrangement as hereinafter more definitely specied.

In the accompanying drawings, Figure 1 is a side elevational view of a saliva-ejector constructed in accordance with my invention, showing the connection between the mouth-tube and the flexible conveyer; Fig. 2 is a central longitudinal sectional view of said connection, showing a fragment of the mouth tube in elevation for convenience of illustration; Fig. 3 is a perspective, view of the inner member or body of the stuffingbox; and Fig. 4 is a plan view of the strainer,

Specification-of Letters Patent. Pgttllted Sept.' 21, 1920. Applieationmea February 2o,Y 1917.v yseriai'No. 149km which is' arranged lto be disposed within the l l casingof the connection betweenthe mouthtube andflexible conveyer,A las Ashown in vFig. 2.

In said figures, the casing'l of the con-` nection is provided with` the nipple 2, to which the flexible conveyer tube 3 may be attached by the ferrulei 4. Said casing 1 is provided with the shoulder 5, against which the strainer 6 is seated within the enlarged cavity 7 of Vthe passageway 8, and A.

retained therein by the inner member or body 9 of the stufling-box, which comprises said body 9 and gland 10. The inner cylindrical flange 11 of the gland 10 is threaded exteriorly to engage the interior threads on tween the inclined opposed surfaces 19 and 20 of the stuffing-box body 9 and gland 10, respectively.

The parts above described may be ,conveniently assembled by placing thestrainer 6 upon its seat 5 in the casing 1 and inserting the body 9 of the stuffing-box, which is arranged to retain said strainer 6 in position, then threading the gland 10A in engagement with the casing 1, and while loosely engaged therewith the mouth-tube 13 may be thrust through the packing 17 until its inner end engages the seat 15,

whereupon the gland may be `further adjusted to tighten the packing around the tube 13, and at the same time force the body or sleeve 9 against the strainer 6, and tightly engage it with its seat upon'the shoulder 5.

It will be noted that by reason of the of the operator.

I do not desire to limit my invention to v the precise details of construction and a1'- 10, which afford a firm hold for the fingers rangement as herein set forth, as it is obvious that various modiiications may be made therein Without departing from the essential eatures'of my invention as de-ined by the appended claims.

Having-rthusdescribed myl invention, I claim:

l. In a saliva-ejector having a mouthpiece, the combination with a casinghaving a seat, of a strainer, and a stuffing-box for said mouthpiece comprising a removable sleeve having a seat forming astop for said mouthpiece packing, and a gla-ndadjustably connected withsaid casing and arranged to force said sleeve into engagementwith said strainer and yieldingly hold it upon the seat in said casing.

Y said body 2. A saliva-ejector having a mouthpiece provided withv a. connection comprising a casing having a seat, a strainer on said seat, a stuiiing-box body engaging said' strainer With said seat, a gland in threaded engagementrwith 'said casing adjustable to force into engagement with said strainer, the parts being So assembled that the removal of said gland effects the release of all of said parts.

In witness whereof, l have hereunto set my handthis 15th day of February, A. D.,

Y GEORGE D. HECK. Witnesses:

7i/LH. DAvrD,

WARREN H. BARTON. Y 

